package com.meilai.project.util;

import java.sql.Timestamp;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.format.DateTimeFormatter;
import java.util.*;

public class DateUtil {

	public static String formatDate(LocalDate date) {
		return date.format(DateTimeFormatter.ofPattern("yyyy.MM.dd"));
	}

	public static String formatDate(Date date) {
		return cn.hutool.core.date.DateUtil.format(date, "yyyy-MM-dd");
	}

	public static String formatDate(long time) {
		DateFormat serverDateFormat = new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss z", Locale.ENGLISH);
		serverDateFormat.setTimeZone(TimeZone.getTimeZone("GMT"));
		return serverDateFormat.format(time);
	}
	/**
	 * 获得时间
	 */
	public static String getTimeString() {
		return getTimeFormat("yyyy-MM-dd HH:mm:ss");
	}

	/**
	 * 获得时间
	 */
	public static Timestamp getTimeTimestamp() {
		return Timestamp.valueOf(getTimeString());
	}

	/**
	 * 获得时间
	 */
	public static LocalDateTime getTimeLocalDateTime() {
		return LocalDateTime.now();
	}

	/**
	 * 获得文件名
	 */
	public static String getFileName() {
		return getTimeFormat("yyyyMMddHHmmssSSS") + (new Random().nextInt(900) + 100);
	}

	/**
	 * 格式化日期
	 */
	public static String getTimeFormat(String pattern) {
		SimpleDateFormat aDate = new SimpleDateFormat(pattern);
		long now = System.currentTimeMillis();
		return aDate.format(now);
	}

	public static Date todayLastDate() {
		Calendar calendar = Calendar.getInstance();
		calendar.set(Calendar.HOUR_OF_DAY, 23);
		calendar.set(Calendar.MINUTE, 59);
		calendar.set(Calendar.SECOND, 59);
		calendar.set(Calendar.MILLISECOND, 999);
		return calendar.getTime();
	}

	public static String getQuarter() {
		String year = getTimeFormat("yy");
		String month = getTimeFormat("MM");
		Double f = Math.ceil(Double.parseDouble(month) / 3);
		Integer i = (new Double(f)).intValue();
		return new StringBuilder(year).append("0").append(i).toString();
	}

	public static String getLastQuarter() {
		String year = getTimeFormat("yy");
		String month = getTimeFormat("MM");
		Double f = Math.ceil(Double.parseDouble(month) / 3);
		Integer i = (new Double(f)).intValue();
		if (i == 1) {
			Integer temp = Integer.parseInt(year) - 1;
			year = temp.toString();
			i = 4;
		} else {
			i = i - 1;
		}
		return new StringBuilder(year).append("0").append(i).toString();
	}

	public static Integer getIntegerQuarter() {
//        String year = getTimeFormat("yy");
		String month = getTimeFormat("MM");
		Double f = Math.ceil(Double.parseDouble(month) / 3);
		Integer i = (new Double(f)).intValue();
		return i;
	}

	public static Integer getLastIntegerQuarter() {
//        String year = getTimeFormat("yy");
		String month = getTimeFormat("MM");
		Double f = Math.ceil(Double.parseDouble(month) / 3);
		Integer i = (new Double(f)).intValue();
		if (i == 1) {
			i = 4;
		} else {
			i = i - 1;
		}
		return i;
	}

	/**
	 * 秒转为易读的时间
	 *
	 * @param sec
	 * @return
	 * @throws
	 * @Title: getHumanTimeBySeconds
	 */
	public static String getHumanTimeBySeconds(long sec) {
		long mss = sec * 1000;
		long days = mss / (1000 * 60 * 60 * 24);
		long hours = (mss % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60);
		long minutes = (mss % (1000 * 60 * 60)) / (1000 * 60);
		long seconds = (mss % (1000 * 60)) / 1000;
		return days + "天" + hours + "小时" + minutes + "分钟" + seconds + "秒";
	}

	/**
	 * 根据偏移量获取时间
	 *
	 * @param addHours
	 * @return
	 * @throws
	 * @Title: getDateTimeByOffsetHours
	 */
	public static Date getDateTimeByOffsetHours(int addHours) {
		Calendar cal = Calendar.getInstance();
		int zoneOffset = cal.get(Calendar.ZONE_OFFSET);
		int dstOffset = cal.get(Calendar.DST_OFFSET);
		cal.add(Calendar.MILLISECOND, -(zoneOffset + dstOffset));
		cal.add(Calendar.HOUR_OF_DAY, addHours);
		Date date = cal.getTime();
		return date;
	}

	// 获得本月第一天0点时间
	public static Date getTimesMonthmorning() {
		Calendar cal = Calendar.getInstance();
		cal.set(cal.get(Calendar.YEAR), cal.get(Calendar.MONDAY), cal.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
		cal.set(Calendar.DAY_OF_MONTH, cal.getActualMinimum(Calendar.DAY_OF_MONTH));
		cal.set(Calendar.MILLISECOND, 000);
		return cal.getTime();
	}

	// 获得本月最后一天24点时间
	public static Date getTimesMonthnight() {
		Calendar cal = Calendar.getInstance();
		cal.set(cal.get(Calendar.YEAR), cal.get(Calendar.MONDAY), cal.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
		cal.set(Calendar.DAY_OF_MONTH, cal.getActualMaximum(Calendar.DAY_OF_MONTH));
		cal.set(Calendar.HOUR_OF_DAY, 23);
		cal.set(Calendar.MINUTE, 59);
		cal.set(Calendar.SECOND, 59);
		cal.set(Calendar.MILLISECOND, 999);
		return cal.getTime();
	}

	public static Date getCurrentYearStartTime() {
		Calendar cal = Calendar.getInstance();
		cal.set(cal.get(Calendar.YEAR), Calendar.JANUARY, 1, 0, 0, 0);
		cal.set(Calendar.DAY_OF_MONTH, cal.getActualMinimum(Calendar.YEAR));
		return cal.getTime();
	}

	public static Date getCurrentYearEndTime() {
		Calendar cal = Calendar.getInstance();
		cal.setTime(getCurrentYearStartTime());
		cal.add(Calendar.YEAR, 1);
		cal.set(Calendar.DAY_OF_MONTH, -1);
		cal.set(Calendar.HOUR_OF_DAY, 23);
		cal.set(Calendar.MINUTE, 59);
		cal.set(Calendar.SECOND, 59);
		cal.set(Calendar.MILLISECOND, 999);
		return cal.getTime();
	}

	//获取当天的开始时间
	public static Date getDayBegin() {
		Calendar cal = new GregorianCalendar();
		cal.set(Calendar.HOUR_OF_DAY, 0);
		cal.set(Calendar.MINUTE, 0);
		cal.set(Calendar.SECOND, 0);
		cal.set(Calendar.MILLISECOND, 0);
		return cal.getTime();
	}

	//获取当天的结束时间
	public static Date getDayEnd() {
		Calendar cal = new GregorianCalendar();
		cal.set(Calendar.HOUR_OF_DAY, 23);
		cal.set(Calendar.MINUTE, 59);
		cal.set(Calendar.SECOND, 59);
		cal.set(Calendar.MILLISECOND, 999);
		return cal.getTime();
	}

	//获取本周一0点时间
	public static Date getTimesWeekmorning() {
		Calendar cal = Calendar.getInstance();
		boolean isFirstSunday = (cal.getFirstDayOfWeek() == Calendar.SUNDAY);
		if (isFirstSunday) {
			cal.add(Calendar.DAY_OF_WEEK, -1);
		}
		cal.set(cal.get(Calendar.YEAR), cal.get(Calendar.MONDAY), cal.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
		cal.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
		cal.set(Calendar.MILLISECOND, 000);
		return cal.getTime();
	}

	//获得本周日结束时间
	public static Date getTimesWeeknight() {
		Calendar cal = Calendar.getInstance();
		cal.setTime(getTimesWeekmorning());
		cal.add(Calendar.DAY_OF_WEEK, 6);
		cal.set(Calendar.HOUR_OF_DAY, 23);
		cal.set(Calendar.MINUTE, 59);
		cal.set(Calendar.SECOND, 59);
		cal.set(Calendar.MILLISECOND, 999);
		return cal.getTime();
	}

	public static Date formatVisitDate(LocalDateTime visitDate) {
		Calendar cal = Calendar.getInstance();
		cal.set(Calendar.YEAR, visitDate.getYear());
		cal.set(Calendar.MONTH, visitDate.getMonthValue() - 1);
		cal.set(Calendar.DAY_OF_MONTH, visitDate.getDayOfMonth());
		return cal.getTime();
	}

	//获得指定年开始时间
	public static Date getYearStart(int year) {
		Calendar cal = Calendar.getInstance();
		cal.set(year, 0, 1);
		cal.set(Calendar.HOUR_OF_DAY, 0);
		cal.set(Calendar.MINUTE, 0);
		cal.set(Calendar.SECOND, 0);
		cal.set(Calendar.MILLISECOND, 0);
		return cal.getTime();
	}

	public static LocalDateTime dateToLocalDateTime(Date date) {
		if (date == null) {
			return null;
		} else {
			return date.toInstant().atZone(ZoneId.systemDefault()).toLocalDateTime();
		}
	}

	public static LocalDate dateToLocalDate(Date date) {
		if (date == null) {
			return null;
		} else {
			return date.toInstant().atZone(ZoneId.systemDefault()).toLocalDate();
		}
	}

	/**
	 * 支持转换的最小农历年份
	 */
	public static final int MIN_YEAR = 1900;

	/**
	 * 支持转换的最大农历年份
	 */
	public static final int MAX_YEAR = 2099;

	/**
	 * 用来表示1900年到2099年间农历年份的相关信息，共24位bit的16进制表示，其中：
	 * 1. 前4位表示该年闰哪个月；
	 * 2. 5-17位表示农历年份13个月的大小月分布，0表示小，1表示大；
	 * 3. 最后7位表示农历年首（正月初一）对应的公历日期。
	 * 以2014年的数据0x955ABF为例说明：
	 * 1001 0101 0101 1010 1011 1111
	 * 闰九月                                  农历正月初一对应公历1月31号
	 */
	private static final int[] LUNAR_INFO = {
			/*1900*/
			0x84B6BF,
			/*1901-1910*/
			0x04AE53, 0x0A5748, 0x5526BD, 0x0D2650, 0x0D9544, 0x46AAB9, 0x056A4D, 0x09AD42, 0x24AEB6, 0x04AE4A,
			/*1911-1920*/
			0x6A4DBE, 0x0A4D52, 0x0D2546, 0x5D52BA, 0x0B544E, 0x0D6A43, 0x296D37, 0x095B4B, 0x749BC1, 0x049754,
			/*1921-1930*/
			0x0A4B48, 0x5B25BC, 0x06A550, 0x06D445, 0x4ADAB8, 0x02B64D, 0x095742, 0x2497B7, 0x04974A, 0x664B3E,
			/*1931-1940*/
			0x0D4A51, 0x0EA546, 0x56D4BA, 0x05AD4E, 0x02B644, 0x393738, 0x092E4B, 0x7C96BF, 0x0C9553, 0x0D4A48,
			/*1941-1950*/
			0x6DA53B, 0x0B554F, 0x056A45, 0x4AADB9, 0x025D4D, 0x092D42, 0x2C95B6, 0x0A954A, 0x7B4ABD, 0x06CA51,
			/*1951-1960*/
			0x0B5546, 0x555ABB, 0x04DA4E, 0x0A5B43, 0x352BB8, 0x052B4C, 0x8A953F, 0x0E9552, 0x06AA48, 0x6AD53C,
			/*1961-1970*/
			0x0AB54F, 0x04B645, 0x4A5739, 0x0A574D, 0x052642, 0x3E9335, 0x0D9549, 0x75AABE, 0x056A51, 0x096D46,
			/*1971-1980*/
			0x54AEBB, 0x04AD4F, 0x0A4D43, 0x4D26B7, 0x0D254B, 0x8D52BF, 0x0B5452, 0x0B6A47, 0x696D3C, 0x095B50,
			/*1981-1990*/
			0x049B45, 0x4A4BB9, 0x0A4B4D, 0xAB25C2, 0x06A554, 0x06D449, 0x6ADA3D, 0x0AB651, 0x095746, 0x5497BB,
			/*1991-2000*/
			0x04974F, 0x064B44, 0x36A537, 0x0EA54A, 0x86B2BF, 0x05AC53, 0x0AB647, 0x5936BC, 0x092E50, 0x0C9645,
			/*2001-2010*/
			0x4D4AB8, 0x0D4A4C, 0x0DA541, 0x25AAB6, 0x056A49, 0x7AADBD, 0x025D52, 0x092D47, 0x5C95BA, 0x0A954E,
			/*2011-2020*/
			0x0B4A43, 0x4B5537, 0x0AD54A, 0x955ABF, 0x04BA53, 0x0A5B48, 0x652BBC, 0x052B50, 0x0A9345, 0x474AB9,
			/*2021-2030*/
			0x06AA4C, 0x0AD541, 0x24DAB6, 0x04B64A, 0x6a573D, 0x0A4E51, 0x0D2646, 0x5E933A, 0x0D534D, 0x05AA43,
			/*2031-2040*/
			0x36B537, 0x096D4B, 0xB4AEBF, 0x04AD53, 0x0A4D48, 0x6D25BC, 0x0D254F, 0x0D5244, 0x5DAA38, 0x0B5A4C,
			/*2041-2050*/
			0x056D41, 0x24ADB6, 0x049B4A, 0x7A4BBE, 0x0A4B51, 0x0AA546, 0x5B52BA, 0x06D24E, 0x0ADA42, 0x355B37,
			/*2051-2060*/
			0x09374B, 0x8497C1, 0x049753, 0x064B48, 0x66A53C, 0x0EA54F, 0x06AA44, 0x4AB638, 0x0AAE4C, 0x092E42,
			/*2061-2070*/
			0x3C9735, 0x0C9649, 0x7D4ABD, 0x0D4A51, 0x0DA545, 0x55AABA, 0x056A4E, 0x0A6D43, 0x452EB7, 0x052D4B,
			/*2071-2080*/
			0x8A95BF, 0x0A9553, 0x0B4A47, 0x6B553B, 0x0AD54F, 0x055A45, 0x4A5D38, 0x0A5B4C, 0x052B42, 0x3A93B6,
			/*2081-2090*/
			0x069349, 0x7729BD, 0x06AA51, 0x0AD546, 0x54DABA, 0x04B64E, 0x0A5743, 0x452738, 0x0D264A, 0x8E933E,
			/*2091-2099*/
			0x0D5252, 0x0DAA47, 0x66B53B, 0x056D4F, 0x04AE45, 0x4A4EB9, 0x0A4D4C, 0x0D1541, 0x2D92B5
	};

	/**
	 * 公历每月前的天数
	 */
	private static final int[] DAYS_BEFORE_MONTH = {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365};

	/**
	 * 将农历日期转换为公历日期
	 *
	 * @param year        农历年份
	 * @param month       农历月
	 * @param monthDay    农历日
	 * @param isLeapMonth 该月是否是闰月
	 * @return 返回农历日期对应的公历日期，year0, month1, day2.
	 */
	public static final int[] lunarToSolar(int year, int month, int monthDay, boolean isLeapMonth) {

		int dayOffset;

		int leapMonth;

		int i;

		if (year < MIN_YEAR || year > MAX_YEAR || month < 1 || month > 12
				|| monthDay < 1 || monthDay > 30) {
			throw new IllegalArgumentException(
					"Illegal lunar date, must be like that:\n\t" +
							"year : 1900~2099\n\t" +
							"month : 1~12\n\t" +
							"day : 1~30");
		}
		dayOffset = (LUNAR_INFO[year - MIN_YEAR] & 0x001F) - 1;
		if (((LUNAR_INFO[year - MIN_YEAR] & 0x0060) >> 5) == 2) {
			dayOffset += 31;
		}
		for (i = 1; i < month; i++) {
			if ((LUNAR_INFO[year - MIN_YEAR] & (0x80000 >> (i - 1))) == 0) {
				dayOffset += 29;
			} else {
				dayOffset += 30;
			}
		}
		dayOffset += monthDay;

		leapMonth = (LUNAR_INFO[year - MIN_YEAR] & 0xf00000) >> 20;

		// 这一年有闰月

		if (leapMonth != 0) {
			if (month > leapMonth || (month == leapMonth && isLeapMonth)) {

				if ((LUNAR_INFO[year - MIN_YEAR] & (0x80000 >> (month - 1))) == 0) {
					dayOffset += 29;
				} else {
					dayOffset += 30;
				}
			}
		}

		if (dayOffset > 366 || (year % 4 != 0 && dayOffset > 365)) {
			year += 1;

			if (year % 4 == 1) {
				dayOffset -= 366;
			} else {
				dayOffset -= 365;
			}
		}

		int[] solarInfo = new int[3];
		for (i = 1; i < 13; i++) {
			int iPos = DAYS_BEFORE_MONTH[i];

			if (year % 4 == 0 && i > 2) {

				iPos += 1;
			}

			if (year % 4 == 0 && i == 2 && iPos + 1 == dayOffset) {

				solarInfo[1] = i;

				solarInfo[2] = dayOffset - 31;

				break;

			}
			if (iPos >= dayOffset) {
				solarInfo[1] = i;
				iPos = DAYS_BEFORE_MONTH[i - 1];
				if (year % 4 == 0 && i > 2) {
					iPos += 1;
				}
				if (dayOffset > iPos) {
					solarInfo[2] = dayOffset - iPos;
				} else if (dayOffset == iPos) {
					if (year % 4 == 0 && i == 2) {
						solarInfo[2] = DAYS_BEFORE_MONTH[i] - DAYS_BEFORE_MONTH[i - 1] + 1;
					} else {
						solarInfo[2] = DAYS_BEFORE_MONTH[i] - DAYS_BEFORE_MONTH[i - 1];
					}
				} else {
					solarInfo[2] = dayOffset;
				}
				break;
			}
		}
		solarInfo[0] = year;
		return solarInfo;
	}

}
